Dual-phase constant on-time power converter and control method

    公开(公告)号:US12126262B2

    公开(公告)日:2024-10-22

    申请号:US18530177

    申请日:2023-12-05

    摘要: An apparatus includes a ramp generator configured to produce a set signal for determining a phase shift between a first phase and a second phase of a power converter, a first phase on-timer configured to produce a first reset signal for determining a turn-on time of a high-side switch of the first phase of the power converter, a second phase on-timer configured to produce a second reset signal for determining a turn-on time of a high-side switch of the second phase of the power converter, and a control logic block configured to generate gate drive signals for the first phase and the second phase of the power converter based on the set signal, the first reset signal and the second reset signal.

    Multi-harmonic field oriented control for poly-phase motor/generator systems

    公开(公告)号:US12113466B2

    公开(公告)日:2024-10-08

    申请号:US17645989

    申请日:2021-12-26

    发明人: Hengchun Mao

    IPC分类号: H02P27/08 H02K3/28 H02P21/22

    CPC分类号: H02P27/08 H02K3/28 H02P21/22

    摘要: A method includes configuring a motor drive system with a motor/generator and a plurality of inverters coupled to the motor/generator, configuring a plurality of active harmonic planes to generate a torque on each of the active harmonic planes, and applying a harmonic plane synchronization mechanism to the plurality of active harmonic planes so that torque components and magnetizing components of currents are controlled in coordination on different active harmonic planes to output a desired torque from the motor/generator.

    Device and method for cleaning board erasers

    公开(公告)号:US12048953B1

    公开(公告)日:2024-07-30

    申请号:US18619070

    申请日:2024-03-27

    IPC分类号: B08B3/14 B08B3/02

    CPC分类号: B08B3/14 B08B3/02

    摘要: Device and method for cleaning board erasers are provided. The device includes a case, one or more cleaning boxes, a flushing mechanism, one or more pressing parts and a rotating mechanism. Each cleaning box is configured for holding and cleaning a board eraser. The flushing mechanism includes a piping and a first power member for pumping water into the cleaning boxes to flush and clean the board erasers placed in the cleaning boxes. The rotating mechanism is configured to drive the cleaning boxes to rotate to set in an initial state or a working state. In the initial state, a user can put a board eraser into a cleaning box. In the working state, the board eraser in the cleaning box can be flushed and cleaned, and can be pressed by the pressing part to squeeze out water in the board eraser.

    Load switch apparatus and control method

    公开(公告)号:US11984877B2

    公开(公告)日:2024-05-14

    申请号:US17397001

    申请日:2021-08-09

    IPC分类号: H03K17/0812

    摘要: An apparatus includes a transistor coupled to a load through an output terminal of a load switch IC, a gate drive circuit connected to a gate of the transistor, wherein the gate drive circuit is configured such that in a short circuit event, a voltage on the gate of the transistor is gradually reduced, and wherein as a result of reducing the voltage on the gate of the transistor gradually, a negative voltage occurring at the output terminal of the load switch IC is minimized.

    Switched capacitor converter and control method

    公开(公告)号:US11936290B2

    公开(公告)日:2024-03-19

    申请号:US17455860

    申请日:2021-11-19

    发明人: Rui Liu Songnan Yang

    IPC分类号: H02M3/07

    CPC分类号: H02M3/07

    摘要: A switched capacitor converter includes a first leg between ground and a first voltage node, a second leg between ground and a second voltage node, a first flying capacitor connected between a first switch common node and a third switch common node of the first leg, a second flying capacitor connected between a first switch common node and a third switch common node of the second leg, a third flying capacitor connected between the first voltage node and the second voltage node, a first upper switch connected between the first voltage node and ground, and a second upper switch connected between the second voltage node and an input terminal.

    Wireless charging receiving circuit and wireless charging receiver

    公开(公告)号:US11824367B2

    公开(公告)日:2023-11-21

    申请号:US17665959

    申请日:2022-02-07

    IPC分类号: H02J50/10 H02M3/07 H02M7/537

    CPC分类号: H02J50/10 H02M3/07 H02M7/537

    摘要: A wireless charging receiving circuit includes a coil, a first energy storage unit, a second energy storage unit, a first switch unit, a second switch unit, a third switch unit, a fourth switch unit, a fifth switch unit, a sixth switch unit, a filter unit, and a control unit. The coil is connected to the first energy storage unit, the second switch unit and the third switch unit. The first energy storage unit and the first switch unit are connected to the fifth switch unit, and the first switch unit is connected with the filter unit and the fourth switch unit at a first connection node. The fourth switch unit is connected with the second switch unit and the second energy storage unit, and the second energy storage unit is connected with the fifth switch unit, the sixth switch units and the coil.

    Surge protection apparatus
    10.
    发明授权

    公开(公告)号:US11695272B1

    公开(公告)日:2023-07-04

    申请号:US17646666

    申请日:2021-12-30

    IPC分类号: H02H9/04 H02H9/00

    CPC分类号: H02H9/04 H02H9/005

    摘要: An apparatus includes a first diode and a second diode connected in series between a first voltage terminal and a second voltage terminal, a switch connected between the first voltage terminal and the second voltage terminal, and a clamping threshold circuit connected between a common node of the first diode and the second diode, and a gate of the switch, wherein the clamping threshold circuit is configured such that in response to a voltage surge applied to the common node of the first diode and the second diode, the switch is turned on once the voltage surge is greater than a predetermined threshold.